Pressure spray dispensing container and method of closing same



Aug. 8, 1961 J. HENCHERT PRESSURE SPRAY DISPENSING CONTAINER AND METHODOF CLOSING SAME Filed Aug. 15, 1958 'I/IIIIIIII I N V EN TOR. JOHNHENCHER r AT 7' OR/VE Y5 United States Patent 2,995,270 PRESSURE SPRAYDISPENSING CONTAINER AND METHOD OF CLOSING SAME John Henchert, RiverForest, 111., assignor to Continental Can Company, Inc., New York, N.Y.,a corporation of New York Filed Aug. '13, 1958, Ser. No. 754,820 4Claims. (Cl. 220-67) The invention relates generally to dispensingcontainer structures, and more particularly to structures of thischaracter which may be formed of aluminum and which are small enough tobe carried in a ladies pocketbook and yet are strong enough to safelyretain internal pressures essential to provide for the pressuredispensing of contents therefrom.

In its more detailed nature the invention resides in the provision of acontainer structure of the character stated wherein the body has anoutwardly turned head at the open upper end thereof and a closure seamsecured on the body and having a bead embracing channel defined in partby a skirt portion turned under the bead, engaging bead and turned skirtportions being flattened and bearing perpendicular relation to the bodyaxis so as to provide greater than normal resistance to internalpressures tending to burst the container or open closure seam portionsthereof.

An object of the invention is to provide a structure of the characterstated wherein a sealing compound is provided in the closure channelover the bead and the inturned and flattened skirt portion holds thebead under compression with the sealing compound in tight sealingengagement over the body bead.

Another object of the invention is to provide a structure of thecharacter stated wherein an upwardly turned terminal edge engaging thebody is formed on the bead, and a downwardly turned terminal edge isformed on the skirt portion and firmly embracing the exterior surface ofthe body.

A further object is to provide a structure of the character statedwherein the body is drawn from aluminum and is necked in at its upperend beneath the closure securing seam to provide a groove beneath saidseam and place the seam so as to minimize projection of the peripherythereof beyond the exterior of the main body.

A still further object of the invention is to provide a novel method ofclosing or sealing the container structure eifective to bring about thefeatures of part structure and arrangement stressed hereinabove.

With the above and other objects in view that will hereinafter appear,the nature of the invention will be more clearly understood by referenceto the following detailed description, the appended claims and theseveral views illustrated in the accompanying drawing.

In the drawing:

FIGURE 1 is a side elevation showing the improved container structure,parts being broken away and in section.

FIGURE 2 is an enlarged fragmentary sectional view showing a chuck and afirst operation seaming roll in the process of completing the firstoperation seaming function, the closure skirt being shown in dottedlines in its initial condition prior to the start of the first operationseaming function.

FIGURE 3 is a view similar to FIGURE 2 and showing the chuck and asecond operation seaming roll in the process of completing the secondoperation seam-ing function.

In the practical development of the invention, the container body 5preferably is drawn from an aluminum blank to provide an integral bottomclosure 6 and an open upper end portion. The upper end portion is neckedin at 7 and provided with an outwardly curled closed bead 8, it beingapparent by reference to FIGURE 2 that this bead constitutes a curl ofapproximately 300, and that the inner terminal edge thereof contactswith the necked in portion of the body.

A closure generally designated 9 is provided, and the same is formed toinclude a countersunk closure body It), and an upstanding, downwardlyopening channel 11, the latter being defined by the inner cylindricalchuck wall 12 which merges into the countersunk body 10 through a wellrounded curve 13, and an outer cylindrical skirt portion 14 connectedwith the chuck wall through the connecting base of the inverted U formedby the channel 11. The countersunk closure body 10 carries a centralraised portion 15 having a central opening 16 therein in which to mountany suitable form of spraying nozzle structure (not shown). The channel11 is equipped with a sealing compound 17 disposed to overlie and engagein sealing contact with the body bead 8 in the manner clearlyillustrated in FIGURES 2 and 3 of the drawings.

In FIGURES 2 and 3, the manner of seam securing the closure onto thebody is illustrated, fragments of cooperating chuck and seaming rollerequipments being illustrated in these views. The chuck 18 has an annulargroove 19 therein to receive and seat over the closure channel 11, and acylindrical wall portion 20 to snugly engage within the closure chuckwall 12 and which merges downwardly into a lead in chamfer 21. Thecooperating first operation seaming roll 22 shown in FIGURE 2 has asomewhat V-shaped periphery 23 positioned relatively to the chuck toengage the closure skirt portion 14 beneath the level of the containerclosure bead 8 and for projection into the container body grooveprovided immediately beneath the bead 8 by reason of the necking in ofthe container body at 7. The V-shaped periphery 23 of the firstoperation seaming roll is defined in part by an outwardly and downwardlyinclined upper wall portion 24, and in part by an outwardly and upwardlyinclined lower wall portion 25. It will be apparent by reference toFIGURE 2 of the drawing that as the first operation seaming roll ismoved inwardly with relation to the chuck 18 the V-shaped periphery 23thereof will first engage the closure channel skirt portion 14, andcontinued inward movement of the said roll will turn the lower skirtportion or draw the same under the head from its initial cylindrical,depending and vertical position shown in dotted lines to the positionillustrated in full lines in FIGURE 2. This turning under of the skirtportion serves to draw the channel downwardly onto the bead, firmlypressing the sealing compound 17 into tight sealing contact over thehead 8.

The second operation seaming roll 26 has a curved annular recess 27positioned to engage the turned portion of the closure skirt oppositethe lower outer portion of the head 8 in the manner clearly illustratedin FIGURE 3. The roll recess 27 merges into a horizontal bead andclosure reshaping shelf 28 which terminates outwardly in a roundedshaping periphery 29. The rounded periphery 29 in turn merges into aninward and downward slope or bevel 30.

After the first operation seaming roll 22 has turned the closure skirt14 under the bead 8 as at 31 in the manner previously described, thesecond operation seaming roll 26 reshapes or flattens the lower part ofthe bead as at 32 and similarly flattens the closure skirt portion at33, and this reshaping of said parts also is attended by the action ofthe rounded roller periphery 29 in turning the closure skirt edgeextremity downwardly at 24 in position for firmly embracing the exteriorsurface of the necked in body portion in the manner clearly illustratedin FIGURE 3. This reshaping of the closure skirt and body bead portionsshapes and places the flattened portions 32 and 33 in positionperpendicular to the axis of the container body and thus provides a seamstructure having greater than normal resistance to internal pressureswithin the container and tending to burst the same or open seamportions. It will also be apparent that the reshaping of partsillustrated in FIGURE 3 additionally puts the bead 8 under compressionand accentuates the drawing of the channel down over the bead and thecompressing of the sealing compound 17 in tight sealing contact oversaid bead. It will also be apparent that the reshaping accentuates theupward turning of the inner terminal edge of the bead 8 and additionallyimparts rigidity to said bead.

It has been found that the method of forming the closure seam describedherein and the form of said seam not only provides a container structurewhich is very neat and attractive in appearance, but said seam structurehas been found to be very practical in its use in containers from whichfill such as hair spray or other cosmetics are to be expelled byinternal pressure provided in any of the commonly used propellants. Theparticular form of the seam and the arrangement thereof on the necked inportion of the body enables the provision of a structure whereinprojection of the closure bead beyond the outside diameter of the mainbody portion is minimized.

While a preferred form of container and seam structure and a preferredmethod of assembling the parts thereof is disclosed in detail herein, itis to be understood that variations in the disclosure of these methodsteps and part arrangements may be provided without departing from thescope of the invention as defined in the appended claims.

I claim:

1. In a container of the type intended to be internally pressurized, abody having an open upper end defined by an integral outwardly turnedclosed bead, a closure for said end having a downwardly open channelembracing said bead, and sealing means interposed between the upperportion of said bead and the opposing portion of said closure channel,said closure including a continuous skirt portion turned under said beadand cooperating therewith in forming a closure sealing seam, said beadand said turned skirt portion having cooperatively engaging flattenedportions disposed generally perpendicular to the axis of said body, saidbead terminating in an upturned edge firmly embracing the exteriorsurface of said body and said skirt terminating in 'a downturned edgefirmly embracing the exterior surface of said body, said bead beingresilient and being held in compression by said turned skirt portionwith the tendency of said head to resume its original shape reacting onsaid closure to continuously tightly and resiliently clamp said sealingmeans between said bead and said closure.

2. The herein described method comprising providing a body having anopen upper end and an outwardly turned closed head, providing andplacing on the body a closure having a downwardly opening channel forembracing the body bead and including a sealing compound therein inposition for engaging over the body bead and a continuous skirt portiondepending below the level of the bead, and turning said skirt portionunder the head while simultaneously reshaping said bead and skirtportion to permanently flatten parts thereof in perpendicular relationto the axis of the body and place and hold the bead under compressionwith the sealing compound in tight sealing contact over the bead.

3. The herein described method comprising providing a body having anopen upper end and an outwardly turned closed head, providing andplacing on the body a closure having a downwardly opening channel forembracing the body bead and including a sealing compound therein inposition for engaging over the body bead and a continuous flat skirtportion depending below the level of the bead, and turning said skirtportion under the head while simultaneously reshaping said bead andskirt portion to permanently flatten parts thereof in perpendicularrelation to the axis of the body and place and hold the bead undercompression with the sealing compound in tight sealing contact over thebead and provide an upwardly turned terminal edge on the bead engagingthe body and a downwardly turned terminal edge on the skirt portionfirmly embracing the exterior surface of the body.

4. The herein described method comprising providing a body having anopen upper end and an outwardly turned closed head, providing andplacing on the body a closure having a downwardly opening channel forembracing the body bead and including a continuous skirt portiondepending below the level of the bead, turning the skirt portioninwardly and downwardly at an angle beneath the bead and into edgecontact with the body below the bead, and then continuing the reshapingof the skirt and simultaneously reshaping the bead and skirt topermanently flatten parts thereof and hold the bead under compressionand press the skirt portion terminal edge against the body and form onthe skirt portion a downwardly turned terminal edge portion firmlyembracing the exterior surface of the body.

References Cited in the file of this patent UNITED STATES PATENTS1,702,541 Heinze Feb. 19, 1929 1,744,712 Bennett Jan. 21, 1930 1,773,278Reid Aug. 19, 1930 1,773,362 Karl Aug. 19, 1930 2,335,647 ChamberlainNov. 30, 1943 2,721,652 Lyon Oct. 25, 1955 2,856,102 Remington et al.Oct. 14, 1958

